HPQ Silicon has reported that 21700 cylindrical cells made with Novacium’s GEN4 silicon-based anode materials achieved a median discharge capability above 6,600 mAh, with a document cell reaching 6,696 mAh at 319.9 Wh/kg gravimetric and 906.2 Wh/L volumetric vitality density, beneath customary trade take a look at situations (0.1C discharge, 4.2–2.5 V, 25 °C).
Business 21700 graphite cells sometimes ship 4,800–5,000 mAh. HPQ notes that capacities above 6,500 mAh on this format are presently restricted to a small variety of builders globally, citing Molicel, EVE Power and Amprius as comparables. GEN4 represents a forty five% enchancment over HPQ’s graphite baseline and a 9% advance over GEN3 in the identical format.
The result’s the most recent step in a staged generational development. HPQ’s 18650 graphite reference measured 2,778 mAh; subsequent generations in 18650 reached ~3,153 mAh (GEN1), ~3,808 mAh (GEN2) and ~4,030 mAh (GEN3) earlier than the transition to 21700 cells pushed GEN3 to ~6,050 mAh and GEN4 to its present 6,600+ mAh common. Future iterations are concentrating on the 7,000 mAh vary.
The cells had been manufactured by an industrial accomplice, and HPQ describes these as improvement and validation outcomes reasonably than industrial manufacturing knowledge. HPQ holds unique North American rights to commercialize Novacium’s GEN3 and GEN4 supplies beneath the ENDURA+ model.
“Reaching a median above 6,500 mAh, with a peak of 6,696 mAh, utilizing a fabric that has not but been absolutely optimized, confirms we now have an industrially viable, high-performance answer advancing inside our commercialization pathway,” mentioned Bernard Tourillon, President and CEO of HPQ Silicon.
Supply: HPQ Silicon
